单项选择题
What is meant by the term overhaul in firefighting?（）
A.Slow down the spread of fire by cooling adjacent structures B.Cover the fire with foam C.Smother the fire with a blanket or similar object D.Break up solid objects to ensure that any deep seated fires are extinguished
单项选择题 What is best suited for fighting a fire in a ballast control room?（）
单项选择题 What is an advantage of using foam in fire fighting?（）
